Minecraft Java 1.21 Mods
Browse 3,671 free mods for Minecraft Java 1.21 — popular picks include Cobblemon Aegislash Shoulder Mount, You Can't Sleep, Endoplasm.
Updated daily
Cobblemon Aegislash Shoulder Mount
This Cobblemon pack allows you to mount Aegislash onto your back.
You Can't Sleep
A about bed sleep's horror mod
Endoplasm
The End finally has a slime, and it eats blocks. Feed a violet gel cube obsidian and get crying obsidian back. It teleports its prey, splits when killed, grows from chorus fruit, and rides home in a bucket. The conversion table is yours to edit. Fabric.
Skeleton Sword
Gives configurable equipment variants to Skeleton-family mobs.
Sculk Wrath
Sculk Wrath is a complete Warden boss overhaul datapack that transforms the Warden into a 4-phase boss fight with custom attacks, boss bar, music, configurable drops, and dramatic animations.
allay_regen
A serverside fabric mod that allows the user to configure lag friendly healing for allays, so that they don't die so frequently.
SoulSpawners
Collect mob souls, customize spawners, and craft unique spawners with configurable recipes and drop chances in Minecraft.
Art's CLA (NLAM)
A datapack that allows chickens to lay anything with some restrictions to reduce abuse and server lag. Based on helmo2019's Chickens Lay Anything.
Pocket Gnomes
Three magical wands. Three specialized gnomes. Build, farm, and hunt with charming little helpers.
AudibleDayNight
All it does is play 'night time, DAY TIME' from the animal voice-overs video when you sleep in a bed.
No Nether RoofSpawns
A lightweight Fabric mod that intelligently controls mob spawning on the Nether roof
RedisEntityBridge
Plugin to send entities to other servers via redis!
Void_Filler
Void Filler is a technology‑focused Minecraft mod built with an engineering‑driven approach to architecture, system design, and scalability.

Accidental Sweep
Prevents you from accidentally attacking the wrong mob when using a sword.
Ominous Bottle Always
Simple Paper plugin that forces Ominous Bottles to always drop from raid captains.
Ores Refined
Adds New Weapons and New Armour Refines Useless Ores To make them Useful
MxSxC1 Passive Mob Invulnerability
This pack will make passive mobs Invulnerable. They cannot be killed, take damage, or be attacked. It also has a bonus mount "Shadow Step". This is designed for younger children who may be upset at the death of innocent animals, but will be expanded.
Super Hardcore
A datapack that makes hardcore actually hard. You now only have 5 hearts and you take damage from a fall taller than 2 blocks.
Pixelmon: Ability Randomizer
Ability Randomizer [Pixelmon Sidemod] shuffles every Pokémon's ability, either as a stable pool shared per species or a fully unique roll for each individual Pokémon.
SYSTEM SMP
System SMP is a premium Minecraft plugin designed for survival multiplayer servers. It adds unique features including small caps text formatting, tree felling mechanics, custom item displays, and an economy-based spawner mining system.
Features & Tweaks
A Minecraft Datapack, that tweaks & overhauls some features of minecraft while also adding New Features that keep minecraft feel new!
Back Off! Pillager!
A simple datapack that makes pillagers back away from their targets like piglins do

LBSpawners
Advanced stacked spawners
XPModifier
Easily customize XP drop percentages for every mob in Minecraft 1.21.11 with an auto-generated config.
Safety is Nowhere
Dreams are real and so are nightmares. The world is corrupted, find the source of abnormalities.
Player Detector
Redstone block that detects if a player is standing on it

CutieDrops
Transform mobs into cute babies and get magical loot drops!
Craft The Villagers
Craft the Villagers with an easy, and cheap <3
StaySmall
A Lightweight plugin to keep your mobs small and cute forever!
The Eye Caster
Challenge the most intelligent mob which is a farlander.
How Rotten!
How Rotten! adds a new infection mechanic from zombie mobs to the game!
PNode
Paper plugin with intuitive visual node-based editor for server logic. No coding required.
Improved Structures & Dungeons
The combination of all minecraft Structure & Dungeons Data Pack
Under The Seas
Discontiued For Certain Amount Of Time A new gameplay to minecraft by exploring the darkness of the sea
Petrify an Oak Slab│石化一個橡木半磚
Added Petrified Oak Slab recipe.│添加了石化橡木半磚配方。
Minks And Misfits
Adds some strange and unique mobs to Minecraft!